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Finding the Fourth Proportional to 541,338.40, 811,930.80 and 167,399.20

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Solution

The fourth proportional to 541,338.40, 811,930.80 and 167,399.20 is: 251,075.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,338.40 : 811,930.80 = 167,399.20 : x
  2. Step 2: Convert to fraction form
    541,338.40/811,930.80 = 167,399.20/x
  3. Step 3: Cross multiply
    541,338.40x = 811,930.80 × 167,399.20
  4. Step 4: Simplify right side
    541,338.40x = 135,916,566,375.36
  5. Step 5: Solve for x
    x = 135,916,566,375.36/541,338.40
  6. Step 6: Final answer
    x = 251,075.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.